Absorber Layer Addition and Thermal Storage Media Comparison for Concentrated Solar Power Plant Optimization

Abstract Electricity generation from concentrated solar power plant can be optimized on its storage system or its receiver system. This paper conducts a review of how to optimize the concentrated solar power plant by increasing the stored energy capacity or by stabilizing the absorptance and emittance in the solar absorber. The additional stages in the CSP may increase thermal efficiency. The stages consist of two oriented solar absorber to create superheated steam fed to the steam turbine and one regenerator to optimally regenerate heat for working fluid before pumped to solar absorber. A suitable treatment for superheated steam from solar absorber can optimally supply the turbine with a continually stable steam. The continuous stable steam can be controlled using steam accumulator right before the superheated steam fed into turbine. The thermal energy storage in the cycle can be optimally selected based on the stored energy capacity per kg of compared material used. The final modification was made using recently developed absorber material of hafnium molybdenum nitride to create four layer tandem absorber of HfMoN(H)/HfMoN(L)/HfON/Al2O3. The tandem absorber indicates a stable absorptance and emittance up until 600 °C (in vacuum) and 525 °C (in air). The final configuration believed to enhance the thermal stability for high temperature concentrated solar power plant application.

[1]  B. O. Seraphin,et al.  Solar energy conversion : solid-state physics aspects , 1979 .

[2]  P. Stroeve,et al.  Innovation in concentrated solar power , 2011 .

[3]  H. Barshilia,et al.  Spectrally selective NbAlN/NbAlON/Si3N4 tandem absorber for high-temperature solar applications , 2008 .

[4]  Roberto Gabbrielli,et al.  Optimal Design of a Molten Salt Thermal Storage Tank for Parabolic Trough Solar Power Plants , 2009 .

[5]  Fletcher Miller,et al.  Thermodynamic Cycles for a Small Particle Heat Exchange Receiver Used in Concentrating Solar Power Plants , 2011 .

[6]  Soteris A. Kalogirou,et al.  Solar thermal collectors and applications , 2004 .

[7]  H. Barshilia,et al.  Design and fabrication of highly thermally stable HfMoN/HfON/Al2O3 tandem absorber for solar thermal power generation applications , 2012 .

[8]  R. Tamme,et al.  Solid media thermal storage for parabolic trough power plants , 2006 .

[9]  Li Zhao,et al.  A novel auto-cascade low-temperature solar Rankine cycle system for power generation , 2011 .

[10]  H. Barshilia,et al.  Optical properties and thermal stability of TiAlN/AlON tandem absorber prepared by reactive DC/RF magnetron sputtering , 2008 .

[11]  Chao Xu,et al.  Performance analysis of a two-stage thermal energy storage system using concrete and steam accumulator , 2011 .

[12]  Luisa F. Cabeza,et al.  State of the art on high-temperature thermal energy storage for power generation. Part 2--Case studies , 2010 .

[13]  Soteris A. Kalogirou,et al.  Solar thermoelectric power generation in Cyprus: Selection of the best system , 2013 .

[14]  Lana S. Pantić,et al.  A review of concentrating solar power plants in the world and their potential use in Serbia , 2012 .

[15]  M. Addonizio,et al.  Stability of W-Al2O3 cermet based solar coating for receiver tube operating at high temperature , 2010 .

[16]  H. Barshilia,et al.  Structure, optical properties and thermal stability of pulsed sputter deposited high temperature HfOx/Mo/HfO2 solar selective absorbers , 2010 .

[17]  H. Barshilia,et al.  TiAlN∕TiAlON∕Si3N4 tandem absorber for high temperature solar selective applications , 2006 .

[18]  Luisa F. Cabeza,et al.  Comparative life cycle assessment of thermal energy storage systems for solar power plants , 2012 .

[19]  M. Addonizio,et al.  Fabrication and optimisation of highly efficient cermet-based spectrally selective coatings for high operating temperature , 2009 .

[20]  Luisa F. Cabeza,et al.  State of the art on high temperature thermal energy storage for power generation. Part 1—Concepts, materials and modellization , 2010 .

[21]  Michael Lanxner,et al.  Solar selective absorber coating for high service temperatures, produced by plasma sputtering , 1990, Other Conferences.